Finding the Fourth Proportional to 1,066.14, 1,471.28 and 624.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.14 : 1,471.28 = 624.42 : x
2. Step 2: Convert to fraction form
   1,066.14/1,471.28 = 624.42/x
3. Step 3: Cross multiply
   1,066.14x = 1,471.28 × 624.42
4. Step 4: Simplify right side
   1,066.14x = 918,693.54
5. Step 5: Solve for x
   x = 918,693.54/1,066.14
6. Step 6: Final answer
   x = 861.70